66422606 has 4 divisors (see below), whose sum is σ = 99633912. Its totient is φ = 33211302.

The previous prime is 66422591. The next prime is 66422611. The reversal of 66422606 is 60622466.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16605650 + ... + 16605653.

It is an arithmetic number, because the mean of its divisors is an integer number (24908478).

Almost surely, 2^66422606 is an apocalyptic number.

66422606 is a deficient number, since it is larger than the sum of its proper divisors (33211306).

66422606 is a wasteful number, since it uses less digits than its factorization.

66422606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33211305.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 66422606 is about 8150.0065030649. The cubic root of 66422606 is about 404.9847192324.

The spelling of 66422606 in words is "sixty-six million, four hundred twenty-two thousand, six hundred six".